Pipe-wrench



(No Model.)

E. J. STONE.

. PIPE WRENCH.

Patented June 4, 1895.

UNITED STATES PATENT OFFICE.

EDWARD J. STONE, OF WAVERLY, PENNSYLVANIA.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 540,409, dated June' 4,`1895.

Application filed March 7, 1825.

To LZZ whom; it may concern.'

Be it known that I, EDWARD J. STONE, a citi- `zen of the UnitedStates,residing at Waverly,

in the county of Lackawanna and State of Pennsylvania, haveinventedcertain new and scribed.

The' annexed drawings, to which reference 1s made, fully illustrate myinvention, in whichl Figure l isa side view of my pipe-wrench. Fig. 2 isan edge view. Fig. 3 is a view of the edge opposite that shown in Fig.2.

Referring by letter to the accompanying drawings, A, designates the mainbar or handle of the wrench,to the end d of which is secured one of thepipe jaws b having the usual teeth c. Thisjaw b has a bifurcation, intowhich the upper end a of the main bar A is secured by a transverse rivetd. The bar A, is also provided with an offset or bearing e to which ispivoted (at f) a movable jaw g comprlsin g two parallel plates h, h,between which 1s secured, by a rivet c', a toothed platej. These platesh h are twin plates and are provided with teeth lo, struck from an arcof a circle from the point of the pivot f, which teeth engage similarteeth Zon the extreme inner end m of a movable bar or handle n. Thisbarnl is pivoted to the main bar by two oblique plates o, o; one oneither side of said bars and said bar n is also pivoted to aplate p oneither side thereof. To the opposite end of said plates 29,10, isconnected the free end q of adat spring r, that is secured to the mainbar, at s.

It will be seen from the above description, taken in connection with thedrawings, that pressure upon the handles will cause the jaws to closeand firmly grip a pipe, by the action of the teeth on the movable barengaging the teeth k on the jaw plates.

In order to adjust the pivoted jaw to pipes of different sizes, theoperator forces the mov- I claim, and desire to secure by LettersPatent, is-

srmno. 540,803. m0 man.)

operation, durable and at the same time cheap to manufacture.

Having thus described my invention, what l. In combination with theiiXed bar having the toothed gripping plate h, of the pivoted jaw,comprising two parallel plates pivoted to the offset e of the xed barand provided with the gripping teeth j and teeth k, the movable barhaving the teeth Z adapted to engage said teeth la, the plates o, o,pivotedat one end to the barA, and at the opposite end to the bar n, theplates 10J), and spring/r said plates piv- `oted at one end to `the barn and at the other end to the spring; the latter secured at s to the barA, substantially as described.

2. In combination with the xedjaw, and the bar or handle thereof, of apivoted jaw having the teeth k, and the movable bar having the teethZ,engaging said teeth la, the plates o, o, pivoted both to the ixed barand movf able bar, the plates p, p, pivoted to the movable bar and tothe spring, secured to the fixed bar at one end and `to the plates p, p,at the opposite end, all substantially as described.

3. In combination withthe xed bar having the toothed gripping plate, ofthe pivoted jaw, comprising two parallel plates, riveted to one 9 5another, at i, and pivoted to the oifset or bearing e and having theteeth k, the movable bar fn, provided at its end with teeth Z, engagingsaid teeth 16,76, and the pivoted plates o, o, connecting the two barsA, n, to one another roo and the pivoted plates 19,1), connecting theupper end of the bar n to the spring and the spring r, secured at s, tothe bar A all substantially as described.

In ,testimony whereof I affix my signature :co5 f in presence of twowitnesses.

EDWARD J. STONE. Witnesses:

PAEDON B. STONE, DEXTER SINSABAUGH.

